stdin to zip command instead of prompt

Question

Want to protect my ZIP archive with password.

Create archive with this:

zip -er archivename.zip file

and get this:

Enter password: 
Verify password: 

Everything is ok,but I have variable with password and need to send this password to zip. Tried through arguments like this, but failed.

echo "$1"| zip -er archivename.zip file

Is it possible in bash? Because zip utility does not support stdin.

Answer 1

Read the man

For insecure solution, use -P:

-P|--password password Use password to encrypt zipfile entries (if any). THIS IS INSECURE!

User interaction

-e|--encrypt Encrypt the contents of the zip archive using a password which is entered on the terminal in response to a prompt